A nanny who argued she was too mentally ill to be held responsible for stabbing two children to death at their home has been convicted, the AP reports. Jurors on Wednesday found that Yoselyn Ortega killed 6-year-old Lucia Krim and 2-year-old Leo Krim in October 2012 and understood the consequences of her actions when she did it. They said she was guilty of murder. Ortega's lawyer Valerie Van Leer-Greenberg didn't dispute that Ortega killed the children but contended she had an undiagnosed mental illness that got worse in the moments leading up to the attack. Mental illness "does not announce itself like a bad cough or a limp," Van Leer-Greenberg said during closing arguments. "Sometimes it sneaks up and nestles in before anyone takes notice."
But prosecutors maintained that Ortega knew what she was doing and acted out of jealous hatred of the children's mother, Marina Krim, who was richer and happier than she was. "She did it intentionally with a full understanding of exactly what it was she was doing—every stab, every slash," Assistant District Attorney Stuart Silberg said during closing arguments. Ortega, 55, who is from the Dominican Republic, showed little emotion during the trial and mostly stared straight ahead. But she shook her head forcefully and mouthed "no" during testimony that her employers treated her well. She faces life in prison.